[PATCH v2] Adding smp_acquire__after_ctrl_dep barrier

[Elena Reshetova]

Changes in v2:
 - hopefully fixed all (at least to my eye and to checkpatch)
   errors on whitespacing, etc.
 - changed text on ACQUIRE guarantees pointed by Andrea and
   Dmitry
 - removed mentioning of control dependency on dec/sub_and_test
   variants

I also have to send it now with a cover letter, because I think
it is Intel mailer that malformed the patch last time for god knows
what reason...

Elena Reshetova (1):
  refcount_t: add ACQUIRE ordering on success for dec(sub)_and_test
    variants

 Documentation/core-api/refcount-vs-atomic.rst | 24 +++++++++++++++++++++---
 arch/x86/include/asm/refcount.h               | 22 ++++++++++++++++++----
 lib/refcount.c                                | 18 +++++++++++++-----
 3 files changed, 52 insertions(+), 12 deletions(-)

-- 
2.7.4